Kak tolong dibantu ya kak cos 5/4 pi =
Matematika
riyadiyadi125
Pertanyaan
Kak tolong dibantu ya kak cos 5/4 pi =
1 Jawaban
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1. Jawaban 18Navillera
cos 5phi/4
= cos (5 x 180/4)
= cos 225°
= cos (180 + 45)°
= -cos 45°
= -1/2 akar2